When Steve is passed out at the table after drinking with Jan the night before, the bottle with liquor in it is less than half full in the shot where Jan leaves, but in the next shot when Betty comes in, the bottle is three quarters full. Also, the salt and pepper stand is in a different position from the first shot.
(at around 53 mins) Steve asks Jan (still believing Jan cannot hear) if he wants to play gin rummy, sits down at the table, and puts the deck of cards in front of Jan. Jan cuts the deck, so Steve takes the cards back to deal, but he deals too many cards. (In gin rummy, each player is supposed to be dealt 10 cards with the 21st card being placed face-up to begin play.) Steve deals 13 cards to Jan and 12 to himself, telling Jan to "throw first"; this may be a local variant of the game instead of beginning with a face-up card; however, the excess cards dealt is an error.